当使用节点锐利的包来调整图像大小并上传到s3时，它会被旋转

我正在使用这个节点包：

https://www.npmjs.com/package/sharp

我用它来调整图像大小，然后将其上传到亚马逊S3。

大多数图像是find的，但其中一些（我假设根据高宽比）得到旋转。

有没有办法来防止这个或它的原因？

这是我正在使用的代码的副本。 imageData是从file upload的s3存储桶文件中获取的数据。 正如你所看到的，我没有调用旋转函数。 反正有'锁'旋转？

module.exports.resize = function(imageData, width, fileName){ sharp(imageData).resize(parseInt(width), null).toBuffer(function (err, data) { if (err) throw err; s3.putObject({ Bucket: aws.bucket, Key: 'images/' + width + '/' + fileName, Body: data }, function (err, data) { if (err) { console.log('Failed to resize image due to an error: ' + err); return { message: 'Failed to resize image due to an error: ' + err }; } else { console.log('s3 image uploaded to ' + 'images/' + width + '/' + fileName); return { message: 's3 image uploaded to ' + 'images/' + width + '/' + fileName }; } }); }); }); 

Answer 1

工作代码从url（s3 url）获取图像，resize，然后将大小调整的图像上传到s3

 var sharp = require('sharp') var request = require('request').defaults({encoding: null}) var s3Upload = require('./s3Upload') module.exports = function (fileLocation) { request(fileLocation, function (error, response, body) { var fileInstance400x400 = sharp(body) var inst400x400 = fileInstance400x400.resize(400, 400) s3Upload('filename400x400', inst400X400) }) } // fileLocation iabsolute url of image 

s3Upload模块

 var aws = require('aws-sdk') var config = require('../config') /** * @param fileName: filename to be saved * @param file: bufferd data */ function defaultContentType(req, file, cb) { setImmediate(function () { var ct = file.contentType || file.mimetype || 'application/octet-stream' cb(null, ct); }); } module.exports = function (fileName, file) { aws.config.update({ accessKeyId: config.S3_CONF.access_key_id, secretAccessKey: config.S3_CONF.access_key, region: config.S3_CONF.region, contentType: defaultContentType, limits: {fileSize: 1000000, files: config.MAX_FILE_COUNT || 6} }) var s3bucket = new aws.S3({params: {Bucket: config.S3_CONF.media_bucket}}); var params = {Key: fileName, Body: file}; // TODO setting proper header for s3 s3bucket.upload(params, function (err, data) { if (err) { console.log('Error uploading data: ', err); } else { console.log('Successfully uploaded data to myBucket/myKey'); } }); } 

希望能帮助到你